Greenhouses, Sheds and Sun Rooms - porch/sunroom

Hello Everyone, I am new to this, so bear with me. I am interested in building a small porch/sunroom on my house. I used to have a covered deck there, but it is hors d combat, and we are having siding put up, so it has been torn down. We are both quite handy and are looking for some do it yourself plans. Home Depot had none. We want something simple but durable. Anyone have plans or suggestions for acquiring some.
Thanks,
Pegasaurus

Don't know what you have in mind, but you might check Sunset and Ortho books for ideas, see what your local library has on the subject, search the web (Texas Aluminum has some good photos of their products, but no plans as such).